Which of the Following Statements Holds True for a Third-Country

Which of the following statements holds true for a third-country national?

A) It refers to an individual who is neither a citizen of the contracting government nor the citizen of the country of operations.
B) It refers to an individual who works for a political organization which consists of a number of countries.
C) It refers to an individual who is not a citizen of the contracting government but the citizen of the country of operations.
D) It refers to an individual who is a citizen of the contracting government as well as the citizen of the country of operations.
E) It refers to an individual who is a not citizen of the country of operations but the citizen of the contracting government.